diff --git a/.envrc b/.envrc
deleted file mode 100644
index d324c24..0000000
--- a/.envrc
+++ /dev/null
@@ -1,2 +0,0 @@
-source_env ..
-use nix
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index 3a6cdd4..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{ pkgs ? import <nixpkgs> { } }:
-pkgs.buildNimPackage {
-  name = "dummy";
-  lockFile = ./lock.json;
-}
diff --git a/tests/test_parser.nim.cfg b/tests/test_parser.nim.cfg
deleted file mode 100644
index e17d20a..0000000
--- a/tests/test_parser.nim.cfg
+++ /dev/null
@@ -1 +0,0 @@
-threads:off